<!DOCTYPE html>
<html>
<head>
<style>
#grad1 {
  height: 400px;
  background-color: red; /* 针对不支持渐变的浏览器 */
  background-image: linear-gradient(red, yellow, green);
}

#grad2 {
  height: 200px;
  background-color: red; /* 针对不支持渐变的浏览器 */
  background-image: linear-gradient(red, orange, yellow, green, blue, indigo, violet);
}

#grad3 {
  height: 200px;
  background-color: red; /* 针对不支持渐变的浏览器 */
  background-image: linear-gradient(red 10%, green 85%, blue 90%);
}
</style>
</head>
<body>

<h1>线性渐变 - 多个色标</h1>
<p><b>注释：</b>如果不规定百分百，则会均匀分布色标。</p>

<h2>三个色标 (evenly spaced)：</h2>
<div id="grad1"></div>

<h2>七个色标 (evenly spaced)：</h2>
<div id="grad2"></div>

<h2>三个色标 (not evenly spaced):</h2>
<div id="grad3"></div>

</body>
</html>
